योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-51, verse-20

स्वप्नकाले स्वप्न एव जाग्रद्व्यग्रापरिग्रहात् ।
जाग्रत्काले जाग्रदेव स्वप्नः सत्यावबोधतः ॥ २० ॥

svapnakāle svapna eva jāgradvyagrāparigrahāt ,
jāgratkāle jāgradeva svapnaḥ satyāvabodhataḥ 20

20. svapnakāle svapnaḥ eva jāgradvyagrāparigrahāt |
jāgratkāle jāgrat eva svapnaḥ satyāvabodhatas ||

20. svapnakāle,
jāgradvyagrāparigrahāt,
svapnaḥ eva (anubhūyate).
jāgratkāle,
satyāvabodhatas (kāraṇāt),
svapnaḥ jāgrat eva (anubhūyate)

20. In the dream state, the dream is experienced as real precisely because the agitated waking state is not comprehended. Likewise, in the waking state, the waking experience is perceived as real because the truth regarding the dream (its unreality) is understood.

Words meanings summery:

• स्वप्नकाले (svapnakāle) - in the time of dream, in the dream state

• स्वप्नः (svapnaḥ) - the dream (state) (dream, sleep)

• एव (eva) - precisely (indeed, only, just)

• जाग्रद्व्यग्रापरिग्रहात् (jāgradvyagrāparigrahāt) - because the agitated waking state is not comprehended (from the non-comprehension of the disturbed waking state)

• जाग्रत्काले (jāgratkāle) - in the time of waking, in the waking state

• जाग्रत् (jāgrat) - the waking experience (waking, awake; the waking state)

• एव (eva) - precisely (indeed, only, just)

• स्वप्नः (svapnaḥ) - the dream (state) (dream, sleep)

• सत्यावबोधतस् (satyāvabodhatas) - because the truth regarding the dream is understood (from the understanding of truth, by means of the realization of reality)

Words meanings and morphology

स्वप्नकाले (svapnakāle) - in the time of dream, in the dream state

(noun)

Locative, masculine, singular of svapnakāla

svapnakāla - dream-time, the state of dreaming

Compound of 'svapna' (dream) and 'kāla' (time)

Compound type : tatpuruṣa (svapna+kāla)

• svapna – dream, sleep
  noun (masculine)
• kāla – time, period, season
  noun (masculine)

स्वप्नः (svapnaḥ) - the dream (state) (dream, sleep)

(noun)

Nominative, masculine, singular of svapna

svapna - dream, sleep, delusion, illusion

Root: svap (class 2)

एव (eva) - precisely (indeed, only, just)

(indeclinable)

जाग्रद्व्यग्रापरिग्रहात् (jāgradvyagrāparigrahāt) - because the agitated waking state is not comprehended (from the non-comprehension of the disturbed waking state)

(noun)

Ablative, masculine, singular of jāgradvyagrāparigraha

jāgradvyagrāparigraha - non-apprehension/non-grasping of the disturbed/agitated waking state

Compound of 'jāgrat' (waking), 'vyagra' (agitated), and 'aparigraha' (non-grasping)

Compound type : tatpuruṣa (jāgrat+vyagra+aparigraha)

• jāgrat – waking, awake
  adjective (masculine)
  Present Active Participle
  Present Active Participle of root 'jāgṛ' (to wake)
  Root: jāgṛ (class 2)
• vyagra – agitated, disturbed, preoccupied, confused
  adjective (masculine)
  From prefix 'vi-' and root 'agr' (to go, lead)
  Prefix: vi
  Root: agr
• aparigraha – non-acquisition, non-possessiveness, non-grasping, non-comprehension
  noun (masculine)
  Negative prefix 'a-' with 'parigraha' (grasping, acquisition)
  Prefix: pari
  Root: grah (class 9)

जाग्रत्काले (jāgratkāle) - in the time of waking, in the waking state

(noun)

Locative, masculine, singular of jāgratkāla

jāgratkāla - waking-time, the state of being awake

Compound of 'jāgrat' (waking) and 'kāla' (time)

Compound type : tatpuruṣa (jāgrat+kāla)

• jāgrat – waking, awake
  adjective (masculine)
  Present Active Participle
  Present Active Participle of root 'jāgṛ' (to wake)
  Root: jāgṛ (class 2)
• kāla – time, period, season
  noun (masculine)

जाग्रत् (jāgrat) - the waking experience (waking, awake; the waking state)

(noun)

Nominative, neuter, singular of jāgrat

jāgrat - waking, awake; the waking state

Present Active Participle

Present Active Participle of root 'jāgṛ' (to wake)

Root: jāgṛ (class 2)

एव (eva) - precisely (indeed, only, just)

(indeclinable)

स्वप्नः (svapnaḥ) - the dream (state) (dream, sleep)

(noun)

Nominative, masculine, singular of svapna

svapna - dream, sleep, delusion, illusion

Root: svap (class 2)

सत्यावबोधतस् (satyāvabodhatas) - because the truth regarding the dream is understood (from the understanding of truth, by means of the realization of reality)

(noun)

Ablative, masculine, singular of satyāvabodha

satyāvabodha - understanding/realization of truth/reality

Compound of 'satya' (truth) and 'avabodha' (understanding), with ablative suffix '-tas'

Compound type : tatpuruṣa (satya+avabodha)

• satya – truth, reality
  noun (neuter)
• avabodha – understanding, knowledge, perception, realization
  noun (masculine)
  Derived from root 'budh' (to know) with prefix 'ava-'
  Prefix: ava
  Root: budh (class 1)

Note: The '-tas' suffix indicates ablative case.